Kobe Watkins

Physics

28 January, 18:06

6. A particle of mass is released from the position A of a semi-sphere and moves frictionless on its inner surface as shown in the figure.

i) Plot the force - cos diagram.

ii) Calculate the magnitude of the velocity ⃗ of the particle at the position A so that the magnitude of the force exerted on the particle at the position C to be = 4.

7. Two perpendicular planes one made up from wood and the other from plastic are in contact as shown in the figure. The depth of each plane is = 5. The projectile A passes through the wooden plane and stops inside the plastic plane at a distance of 1 = 2. The projectile C passes through the plastic plane and stops inside the

wooden one at a distance of 2 = 1. If the resistance forces on the projectiles from

the wood and plastic are assumed constant during the motion of the projectiles, calculate the ratio ⁄.