Solve first two question only

1. Two blocks are connected by means of a string as shown in fig. P1. The smooth inclined surface makes an angle of 30 with the horizontal. The mass of the block on the incline is 5.0 kg and the 5.0 kg mass of the hinging block is 4.0 kg. Find a) acceleration of the blocks and b) the tension in the 4.0.kg connecting cord. 30g 2. A block slides down at 150 incline in 4 s. If the Fig P19 coefficient of kinetic friction between the block and the surface is 0.12, find the distance (x) traveled and b) X the velocity of the block at the end of 4 s 3. When a carpenter shuts off his circular saw, the 25 cm 15 diameter blade slows from 5900 rpm to zero in 2.0 s. a) What is the angular acceleration of the blade? b) What is the Fig P2 distance traveled by a point on the rim of the blade during the 2.0 s of deceleration? c) What is the velocity and total acceleration of a point 10 cm, from the center of rotation, on the blade? 4. A 970 kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when reaches a speed of 25.0 m/s. Find a) the acceleration of the car b) the distance traveled by the car during this time and c) the average force exerted on the car during this time Equations: Newtons Laws Fnet = ma f = un W = mg EFX = 0 EFy = 0 g = 9.8 m/s? tan 0 = EF/F. UNIFORM AND NON-UNIFORM CIRCULAR MOTION 0 = 0 0 = Wot +0.5at?; ()1 = Wo+ at ; of =03+ 200 Ar S = ro; VT = 10; at = ro; as = V, 7/r or no? a = Ja; +a