Nature of Physical World and Measurement
Laws of Motion
Work, Energy and Power
Motion of System of Particles and Rigid Bodies
Properties of Matter
Heat and Thermodynamics
Kinetic Theory of Gases
- Static Friction
- Kinetic Friction
- To Move an Object - Push or pull? Which is easier?
- Angle of Friction
- Angle of Repose
- Application of Angle of Repose
- Rolling Friction
- Methods to Reduce Friction
An object of mass m begins to move on the plane inclined at an angle θ. The coefficient of static friction of inclined surfaces is µs. The maximum static friction experienced by the mass is ______
A long stick rests on the surface. A person standing 10 m away from the stick. With what minimum speed an object of mass 0.5 kg should he has thrown so that it hits the stick. (Assume the coefficient of kinetic friction is 0.7).
People often say “For every action, there is an equivalent opposite reaction”. Here they meant ‘action of a human’. Is it correct to apply Newton’s third law to human actions? What is mean by ‘action’ in Newton's third law? Give your arguments based on Newton’s laws.
Two masses m1 and m2 are connected with a string passing over a frictionless pulley fixed at the comer of the table as shown in the figure. The coefficient of static friction of mass m1 with the table is µs Calculate the minimum mass m3 that may be placed on m1 to prevent it from sliding. Check if m1 = 15 kg, m2 = 10 kg, m3 = 25 and µs = 0.2.