Which change would cause the largest increase in a mountain climber’s gravitational potential energy? carrying twice the weight and climbing half as high
carrying half the weight and climbing half as high
carrying twice the weight and climbing twice as high
carrying half the weight and climbing twice as high

He viscosities of several liquids are being compared. all the liquids are poured down a slope with equal path lengths. the liquid with the highest viscosity will

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

Acar of mass 800kg is moving at a speed of 2.2m/s.