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Physics Problems
3.1 20 N force moves a body with an acceleration of 2 m/s². What is its mass?
3.2 The weight of a body is 147 N. What is its mass?
3.3 How much force is needed to prevent a body of mass 10 kg from falling?
3.4 Find the acceleration produced by a force of 100 N in a mass of 50 kg.
3.5 A body has weight 20 N. How much force is required to move it vertically upwards with an acceleration of 2 m/s²?
3.6 Two masses 52 kg and 48 kg are attached to the ends of a string that passes over a frictionless pulley. Find the tension in the string and acceleration in the bodies.
3.7 Two masses 26 kg and 24 kg are attached to the ends of a string which passes over a frictionless pulley. 26 kg is lying over a smooth horizontal table. 24 kg mass is moving vertically downward. Find the tension in the string and the acceleration in the bodies.
3.8 How much time is required to change 22 Ns momentum by a force of 20 N?
3.9 How much is the force of friction between a wood block of mass 5 kg and the horizontal marble floor? The coefficient of friction between wood and marble is 0.6.
3.10 How much centripetal force is needed to make a body of 0.5 kg move in a circle of radius 50 cm with a speed of 3 m/s?