A painter is using a ladder to paint the outside of a house. The ladder, which i

Question

A painter is using a ladder to paint the outside of a house. The ladder, which is 8.44 m long and has a mass of 23.7 kg, lies flat on the ground. The painter holds the top of the ladder and pulls straight up with a force 230 N. The lower end of the ladder remains on the ground. As a result, the ladder experiences an angular acceleration of 1.61 rad/s^2 about an axis passing through the bottom end of the ladder. The ladder's center of gravity lies halfway between the top and bottom ends. Calculate (a) the net torque acting on the ladder and (b) the ladder's moment of inertia. Enter the answers in the space provided, using the following example format: 50.32 m/s^2, 36.4 degrees.

Explanation / Answer

net torque = 960.06 n-m

moment of inertia = 596.31 kgm^2

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