At the instant shown, the hammer head H is moving to the right with a speed υH = 45 ft/s a...

At the instant shown, the hammer head H is moving to the right with a speed υH = 45 ft/s and the angle θ = 20°. Assuming that the belt does not slip relative to wheels A and B and assuming that wheel A is mounted on the shaft of the motor shown, determine the angular velocity of the motor at the instant shown. The diameter of wheel A is d = 0.25 ft, the radius of wheel B is R = 0.75 ft, and point C is at a distance ℓ = 0.72 ft from O, which is the center of the wheel A. Finally, let CD have a length L = 2 ft, and assume that, at the instant shown, ϕ = 25°.

Figure P6.130