A satellite orbits around the earth due to
A.Celestial force
B.Gravitational force
C.Centrifugal force
D.Centripetal force
E.All of the above
A.Celestial force
B.Gravitational force
C.Centrifugal force
D.Centripetal force
E.All of the above
A.3.14 cm/s
B.31.4 cm/s
C.314 cm/s
D.3140 cm/s
E.31400 cm/s
A.When we are ascending in a lift with acceleration of 4.9 m/s2
B.When we are freely faling
C.We are orbiting in a satellite
D.We are at the centre of the earth
A.If friction is neglected, the reactions are always normal to the surfaces on contact
B.Friction always acts to oppose the relative motion of the free body
C.If static friction is acting, the value of the friction force may vary from zero to its maximum value
D.The force of friction is always normal to the surface
E.All of the above
A.at the highest position
B.at the lowest position
C.at the midway position
D.at none of the above
A.809 rad/min2
B.308/min2
C.502 rad/min2
D.683 rad/min2
A.Involute
B.Cycloid
C.Epicycloid
D.Centrode
E.Straight line
A.520 m/s2
B.640 m/s2
C.780 m/s2
D.870 m/s2
A.Nowton’s law
B.Corollary to Newton’s laws of motion
C.Mohr’s principle
D.D’ Alembert’s principle
E.Principle of dynamics