The bola is a weapon used by gauchos for entangling animals. It consists of three balls of stone or iron connected by things. The gaucho whirls the bola in the air and hurls it at the animals. What can we say about its motion?

A particle moving along a straight line reverses its direction of motion once. What can we say about the nature of its acceleration?

A particle moving along a straight line path reverses its direction of motion twice. What can we say about the nature of its acceleration?

Two balls of mass m and 4m are connected by a rod of length L. The mass of the rod is small and can be treated as zero . The size of the balls also can of the neglected . We also assume the centre of the rod is hinged ,but the rod can rotate about its centre in the vertical plane without friction . What is the gravity - induced angular acceleration of the rod when the angle between the rod and the vertical is theta as shown ?

Two balls of mass m and 4m are connected by a rod of length L. The mass of the rod is small and can be treated as zero . The size of the balls also can of the neglected . We also assume the centre of the rod is hinged ,but the rod can rotate about its centre in the vertical plane without friction . What is the gravity - induced angular acceleration of the rod when the angle between the rod and the vertical is theta as shown ?