7) In the figure, the force F-20 N, M-4 kg 6= 30 and the coefficient of...

 

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7) In the figure, the force F-20 N, M-4 kg 6= 30 and the coefficient of kinetic friction betwoen the ground and the block is = 02. The Acceleration (in m/s) of the block is A) 4.98 D) 9.81 B) 6.81 E) 5.73 187 Q8) In the Figure MI -S kg M2-8 kg and 0 30. All the surfaces are frictionless. The acceleration (in mis) of mass M2 is: A) 2.5 down the incline B)2.5 up the incline cyo.75 down the ineline r0.75 up the incline M2 E)0 MI Q9) In the figure, all surfaces are rough. MI-4 kg and M2-2 kg and the coefficients of friction ,0.5 and = 0.2 for all surfacea Find the maximum value of mass m (in kg) such that mass M2 will move with mass MI without sliding Ignore masies of all strings and the mass of the pulley. M22 MI 4 A, BA B) 23 C)60 D) 33 E)49 Q10) A 16.0-kg child is sitting on the back seat of a car that is moving at a constant velocity of 10 ms along a horizontal road. The driver notices a red traffic light ahead of him and applies the breaks. If the car comes to a stop in 18 m, calculate the minimum value of the coefficient of static friction such that the child does not slide. (Assume only the force of friction acts on the child in the horizontal direction). A)05 B)0.1 D) 0.7 E)0.6 F,(N) QI) A 4.0-kg object starts moving from the origin with a speed of 3 m's under the effect of a variable force F, that acts along the x-is as shown in the figure. The speed (in m/s) of the object at x= 10 m is 16 of to (m) A) 92 B) 69 -16 D) 6.0 C75 Q12) You run a race with a friend. At finst your kinetic energy is the same as his kinetic energy, but he is running faster than you are. When you increase your speed by 20 percent, you are running at the same speed he is If your mass is 105 kg what is his mass (in kg? A) 8 173 C) 115 D) 96 E)81 7) In the figure, the force F-20 N, M-4 kg 6= 30 and the coefficient of kinetic friction betwoen the ground and the block is = 02. The Acceleration (in m/s) of the block is A) 4.98 D) 9.81 B) 6.81 E) 5.73 187 Q8) In the Figure MI -S kg M2-8 kg and 0 30. All the surfaces are frictionless. The acceleration (in mis) of mass M2 is: A) 2.5 down the incline B)2.5 up the incline cyo.75 down the ineline r0.75 up the incline M2 E)0 MI Q9) In the figure, all surfaces are rough. MI-4 kg and M2-2 kg and the coefficients of friction ,0.5 and = 0.2 for all surfacea Find the maximum value of mass m (in kg) such that mass M2 will move with mass MI without sliding Ignore masies of all strings and the mass of the pulley. M22 MI 4 A, BA B) 23 C)60 D) 33 E)49 Q10) A 16.0-kg child is sitting on the back seat of a car that is moving at a constant velocity of 10 ms along a horizontal road. The driver notices a red traffic light ahead of him and applies the breaks. If the car comes to a stop in 18 m, calculate the minimum value of the coefficient of static friction such that the child does not slide. (Assume only the force of friction acts on the child in the horizontal direction). A)05 B)0.1 D) 0.7 E)0.6 F,(N) QI) A 4.0-kg object starts moving from the origin with a speed of 3 m's under the effect of a variable force F, that acts along the x-is as shown in the figure. The speed (in m/s) of the object at x= 10 m is 16 of to (m) A) 92 B) 69 -16 D) 6.0 C75 Q12) You run a race with a friend. At finst your kinetic energy is the same as his kinetic energy, but he is running faster than you are. When you increase your speed by 20 percent, you are running at the same speed he is If your mass is 105 kg what is his mass (in kg? A) 8 173 C) 115 D) 96 E)81

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