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A bicycle wheel of radium R= 37 cm and mass M= 2.7 kg is at rest against a step of height r=0.60 R, as illustrated in attached photo.
a. Find the minimum horizontal force F that must be applied to the axle to make the wheel start to rise up over the step. (Please show your work here, as I really need help with understanding and care less about the answer)
b. As the wheel moves up the step, does the minimum horizontal force required to keep it oving increase, decrease or stay the same? Explain. (I think it decreases, but I'm not sure why?)
c. Now the bike wheel has just reached the top of the step, having been lifted there by a constant horizontal force of 72 N. Find the speed of the wheel. Assume that the wheel is a hoop of mass M and radium R.
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A 2 kilogram block is released from rest on a 45 degree incline and slides a distance of 1.5 meter down the incline in 2 second. Find coefficient of kinetic friction between block and incline
A swing is made from a rope that will tolerate a maximum tension of7.0 102 N without breaking. What is the mass of the heaviest person who can ride the swing
A 41 kg crate, starting from rest, is pulled across a floor with the constant horizontal force of 250 N. For the first 10m the floor is frictionless, and for the next 11.00 m the coefficient of friction is 0.17. What is the final speed of the crat..
A solenoid (coil) has a radius of 7.2 cm, a length of 31.5 cm, and has 380 turns of wire. A current of 350 mA runs through the coil. Calculate the field strength inside the coil
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