(7%) Problem 10: A 69-kg man stands on a scale in an elevator that accelerates upwards from rest to 7.5 m/'s in 2.00 s. @theexpertta.com - tracking raccordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. & Calculate the scale reading, in newtons, during this process (The scale exerts an upward force on him equal to its reading.) Grade Summary F = Deductions 0% Potential 100% Late Work % 50% sin( cos( tan( 9 HOME Late Potential 50% cotan( asin( acos() F 4 6 Submissions atan( acotan( sinh() 3 Attempts remaining: 5 cosh() tanh() cotanho + END (4% per attempt) detailed view O Degrees O Radians BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 1% deduction per hint. Hints remaining: 3 Feedback: 2% deduction per feedback.(7%) Problem 11: A block is resting on a wooden plank. There is a hinge on one end of the plank which allows the other end to be lifted to create an angle, 0 with respect to the horizontal as shown in the figure. The coefficient of static friction between the block and the plank is us m Otheexpertta.com @theexpertta.com - tracking In accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. A 33% Part (a) Please select the correct Free Body Diagram, where F. is the force due to gravity, FN is the normal force, and F is the static friction force. Grade Summary O O O Deductions 0% Potential 1009% Late Work % 50% Late Potential 50% Submissions Attempts remaining: 5 F. F . (20% per attempt) detailed view O O O TIL. F. F. Submit Hint Feedback I give up! Hints: 1% deduction per hint. Hints remaining: 2 Feedback: 2% deduction per feedback. 4 33% Part (b) The angle @ is slowly increased. Write an expression for the angle at which the block begins to move in terms of us. A 33% Part (c) If a student measures that the block begins to move at an angle of 0 = 36.5, what is the numerical value of the coefficient of static friction,(7%) Problem 12: A block of mass m = 14.5 kg rests on an inclined plane with a coefficient of static friction of us = 0.11 between the block and the plane. The inclined plane is _ = 6.6 m long and it has a height of h = 3.9 m at its tallest point. m -5 - Otheexpertta.com @theexpertta.com - tracking accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. A 20% Part (a) What angle, @ in degrees, does the plane make with respect to the horizontal? Grade Summary Deductions 0% Potential 100% Late Work % 50% sin cos() tan() 7 8 9 HOME Late Potential 50% cotan() asin( acost 4 5 6 Submissions atan( acotan( sinh() 2 3 Attempts remaining: 5 cosh( anh( ) cotanh( + END (4% per attempt) detailed view O Degrees O Radians BACKSPACE CLEAR Submit Hint Feedback I give up! Hints: 1% deduction per hint. Hints remaining: 2 Feedback: 2% deduction per feedback. A 20% Part (b) What is the magnitude of the normal force, Fy in newtons, that acts on the block? A 20% Part (c) What is the component of the force of gravity along the plane, Fox in newtons? 4 20% Part (d) Write an expression, in terms of @: the mass m, the coefficient of static friction us, and the gravitational constant g. for the magnitude of the force due to static friction, F}, just before the block begins to slide. & 20% Part (e) Will the block slide?(7%) Problem 13: A particle of mass 0.58 kg is subject to a force that is always pointed towards the North but whose magnitude changes quadratically with time. Let the y-axis point towards the North. The magnitude of the force is given as F = (6 N/s)+2. @theexpertta.com - tracking ide accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. A 50% Part (a) Determine the change in the velocity Av, in meters per second, of the particle between t = 0 and t = 2.9 s. Grade Summary Av= m/'s Deductions 0% Potential 1009% Late Work % 50% sin( cosO) tan( ( 7 8 9 HOME Late Potential 50% cotan( asin( cos() E 4 6 Submissions atan() acotan( sinh( 1 2 3 Attempts remaining: 5 cosh() tanh() cotanho + END (4% per attempt) detailed view O Degrees O Radians BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 1% deduction per hint. Hints remaining: 1 Feedback: 2% deduction per feedback. 4 50% Part (b) Determine the change in y-coordinate, in meters, of the particle Ay between t = 0 and t = 2.9 if the initial velocity = 24.2 m's and directed North, in the same direction as the force.(7%) Problem 14: A particle of mass 1.95 kg begins at rest and is then subject to a force in the positive x direction that changes with time as given by the following function: F = mg[1-e." ], where g is the acceleration due to gravity. @theexpertta.com - tracking id accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly orbidden. Doing so may result in termination of your Expert TA Account. A 50% Part (a) Determine the change in the velocity Av of the particle between t = 0 and t = 1.2 seconds. Grade Summary Av= m/s Deductions 0% Potential 100% Late Work % 50% sing cos() tan( 9 HOME Late Potential 50% cotan( asin( acos() 6 + Submissions atan( acotan() sinh 3 Attempts remaining: 5 cosh( tanh( cotanh( + END (4% per attempt) detailed view O Degrees O Radians BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 1% deduction per hint. Hints remaining: 1 Feedback: 2% deduction per feedback. A 50% Part (b) Determine the change in x-coordinate of the particle Ax between t = 0 and t = 1.2 seconds