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Q. On a very muddy football field, a 120kg linebacker tackles an 75kg halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.8 m/s north and the halfback is sliding with a velocity of 7.5 m/s east.
Q. you are swinging your younger sister in a circle of radius .85m. If her mass is 28kg and you arrange it so she makes one revolution every 1.5s, (a) what is the magnitude and direction of the force that must be exerted by you on her? (b) what is the magnitude and direction of the force she exerts on you?
A string of mass 0.0003kg/m and 0.5m long is vibrating 200 cycles per second. What must be the tension? What hanging mass would generate this tension? I got 12N for tension. Is this correct? And how would you solve for hanging mass.
how fast is the mass moving when leaves the spring. What is her velocity relative to the ice surface.
assume you are standing on a train, both feet together, facing a window. The front of the train is to your left. The train starts moving forward.
A 12.0 kg box resting on the horizontal, frictionless surface is attached to a 5.00 kg weight by a thin, light wire that passes without slippage over the frictionless pulley. The pulley has the shape of the uniform solid disk of mass 2.10kg and diame..
An insulated Thermos contains 131 cm3 of hot coffee at 82 °C. You put a 12g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though ..
What is the magnitude of the auto average acceleration.
What minimum force is necessary to start the block moving up the wall? (Hint: The static frictional force is now directed down the wall.)
Establish the initial volume of the gas . What is the magnitude of normal force that each brake pad applies to the rim.
You are driving home from school steadily at 80 for 150. It then begins to rain and you slow to 50. You arrive home after driving 3 hours and 20 minutes.
A crate with a mass of 171.5 kg is suspended from the end of a uniform boom with a mass of 80.3 kg. The upper end of the boom is supported by a cable attached to the wall and the lower end by a pivot (marked X) on the same wall. compute the tensio..
A spherical steel shell with shell thickness 10 mm rolling down the ramp without slipping.assume that the density of aluminum.
A small block of mass m1 = 0.5kg slides to the left, with a velocity of v1 = -8.40 m/s, towards a curved wedge of mass m2 = 3 kg which sits on an icy, frictionless lake surface.
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