he top of a ramp, which is inclined at an angle of 20 degrees with respect to the horizontal. Someone gives the crate a quick shove to get es down the ramp without any further assistance. The coefficient of kinetic friction between the crate and the ramp is Hs = 0.23. What is eration (in m/s?) of the crate?
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- A skater with an initial speed of 8.10 m/s stops propelling himself and begins to coast across the ice, eventually coming to rest. Air resistance is negligible.(a) The coefficient of kinetic friction between the ice and the skate blades is 0.135. Find the deceleration caused by kinetic friction.(b) How far will the skater travel before coming to rest? a = + - units x = unitsA 17 kg block is released from rest on a 32.5° incline. It takes 4.74 seconds to slide 1.18 meters along the ramp. Find the weight of the block. Fg = Find the acceleration of the block. a = m/s? Find the Normal Force. FN N. Find the friction. Ff = Find the coefficient of friction. µ =A horizontal force of 87.2 N is applied to a 40.5 kg crate on a rough, level surface. If the crate accelerates at 1.23 m/s2, what is the magnitude of the force of kinetic friction (in N) acting on the crate?
- A hockey puck slides with an initial speed of 56.7 m/s on a large frozen lake. The coefficient of kinetic friction between the puck and the ice is 0.05. What is the acceleration on the hockey puck caused by friction? Assume the puck's velocity is in the positive-x direction. And what is the speed of the puck after 6 s?A book with mass = 2.25 kg rests on the surface of a bar. The coefficient of static friction between the book and the par us=0.71 and the coefficient of kinetic friction is uk=0.44. What would the expression be for alpha, the book's acceleration, after it begins moving? Especially assuming the min force Fm continues to be applied. How is this numerically solved for acceleration in terms of a in m/s2Determine the force Q-> when the block moves with constant velocity. Express your answer in vector form.
- What is the tension in the cable that is lifting a 3500 kg elevator if the upward acceleration of the elevator is 2.6 m/s2?A car of mass 822 kg is traveling 26.4 m/a when the driver applies the brakes, which lock the wheels. The car skids for 4.47 s in the positive x direction before coming to rest. What is the cars acceleration in m/ s2? what magnitude force in N acted on the car during this time? How far in m did the car travel?(0.25) cos m, = 14 kg macs for m, for 5. You are pulling a 39 kg box on a level floor by a rope attached to the box. The rope makes an angle of 21° with the horizontal. The coefficient of kinetic friction between the box and the floor is 0.23. Calculate the magnitude of the tension in the rope needed to keep the box moving at a constant velocity. (Hint: The normal force is not equal in magnitude to the force of gravity.) KU TI A (ans: 87 NJ SHARP
- A person weighing 935. N rides in an elevator that has a downward acceleration of 1.26 m/s2. What is the magnitude of the force (in N) of the elevator floor on the person?A 40 kg wooden crate is being pulled across a wooden surface by a force (of magnitude F) that is angled 20° above the horizontal. The coefficient of static friction is 0.5 and the coefficient of kinetic friction is 0.3. (a)Calculāte the minimum force F (in N) that must be exerted to get the crate moving. (b)What is the acceleration (in m/s?) of the crate once it starts to move, if that force (F) is maintained?Blocks 1 and 2 are moving to the right on a frictionless surface by the tension TB = 36 N as shown. m1 = 2.0 kg, and m2 = 3.2 kg. What is the magnitude of the acceleration of block 2, in m/s²? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. m₁ TA m₂ TB