Q1. A box of well called as breakfast cereal states that one small portion of the cereal contains 110 Calories (1 Cal = 4186 J). If 2.0 percent of this energy could be converted by a weight lifters body into work completed in lifting a barbell, what is the heaviest barbell that could be lifted a distance of 2.1 m?

Q2. A bicycle wheel of radius r = 0.5 m starts from rest and rolls 150 m without slipping in 30 s. Assuming that the angular acceleration of the wheel was constant, calculate: a) angular acceleration, b) final angular velocity c) the tangential velocity and tangential acceleration of a point on the rim after one revolution.