A uniform sphere of mass m and radius R is placed on a rough horizonta

1.	A uniform sphere of mass m and radius R is placed on a rough horizontal surface (Fig. 7.9). The sphere is struck horizontally at a height h from the floor. Match the following:(a) h = R/2(i) Sphere rolls without slipping with a constant velocity and no loss of energy.(b) h = RSphere spins clockwise, loses energy byfriction.(c) h = 3R/2(iii) Sphere spins anti-clockwise, loses energy by friction.(d) h = 7R/5(iv) Sphere has only a translational motion, looses energy by friction.
Answer» (a) iii, (b) iv (c) ii (d) i.

A uniform sphere of mass m and radius R is placed on a rough horizontal surface (Fig. 7.9). The sphere is struck horizontally at a height h from the floor. Match the following:(a) h = R/2(i) Sphere rolls without slipping with a constant velocity and no loss of energy.(b) h = RSphere spins clockwise, loses energy byfriction.(c) h = 3R/2(iii) Sphere spins anti-clockwise, loses energy by friction.(d) h = 7R/5(iv) Sphere has only a translational motion, looses energy by friction.

Answer»

(a) iii,

(b) iv

(d) i.