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A block with a mass of m is resting on a 20 degree slope. The block has coefficients of friction 0.81 and 0.55 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 2.0 kg .
A) What is the minimum mass that will stick and not slip?
B) If this minimum mass is nudged ever so slightly, it will start being pulled up the incline. What acceleration will it have?
a chain is held on a frictionless table with 1/5 of its length hanging over the edge. how much work is required to pull the hanging part back
An astronaut is stuck in space with no fuel for his thrusters. He is 250 m away from his ship and only has a heavy wrench in his possession. How long does it take the astronaut to reach his ship
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What is the electric field of a parallel plate capacitor that has q=+5.53 uC on one plate and q=-5.53 uC on the other plate. The area of each plate is 0.023m
Suppose a hockey puck slides down a frictionless ramp with an acceleration of 4.00 m/s2. If the ramp has a length of 5.90 m, how long does it take the puck to reach the bottom
A 13000 kg railroad car travels alone on a level frictionless track with a constant speed of 17 m/s. A 6500 kg load, originally at rest, is dropped onto the car. What will be the car's new speed.
Racing drivers like to warm up the tyres of their car as soon as possible. One reason is that warm tyres grip the road better but the temperature also affects the pressure of the air into he tyres.
The angular velocity of a 755-g wheel 15.0 cm in diameter is given by the equation ω(t) = (2.00 rad/s2)t + (1.00 rad/s4)t3. Through how many radians does the wheel turn during the first 2.00 s of its motion
An unmarked police car travelling a constant 80 km/h is passed by the speeder travelling 100 km/h. precisely l.0s after the speeder passes, the policeman steps on an accelerator; if the police car's acceleration is 2.0m/s2, how much time passes befor..
q. a 12.0 kg bucket of water of is suspended by a rope wrapped around a windlass which is the solid cylinder 0.500 m in
A 2.00 meter long horizontal plank whose mass is 3.00 kg is placed so that the very end (the right end) rests on a retaining wall. Find the force acting on the board by the retaining wall
Explain what was observed with the horizontal motion of the man and the boat in terms of Newton's Laws of Motion.
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