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Figure shows three vecotrs where R is the midpoint of PQ. Then which of the following
relation is correct ?
If vectors and are inclined to each other at angle then is
If a c=0and |a|=1 , ||= 1 and |c|= then angle between a and b is
a-t graph for a particle moving in a straight line is as
shown in figure. Change in velocity of the particle from t = 0 to t = 6s is
An insect crawls a distance of 4m along north in 10seconds and then a distance of 3 m along east in 5seconds. The average velocity of the insect is
Let and denote the velocity and acceleration respectively of a particle in one dimensional motion
A stone is projected with a velocity at an angle of to the horizontal. The average velocity of stone during its motion from starting point to its maximum height is (Take
Which one of the following is constant in a projectile motion ?
At the uppermost point of a projectile its velocity and acceleration are at an angle of
The maximum range of a gun on horizontal terrain is1.0 km. If g =10 what must be the muzzle velocity of the shell
Block B moves to the right with a constant velocity The velocity of body A relative to B is
A block of mass m is at rest on an inclined surface having a coefficient of friction as shown in the figure. The horizontal acceleration which shouldbe given to the inclined plane, that the force of friction between the block and the plane become zero, is
A block of weight 5N is pushed against a vertical wall by a force 12 N. The coefficient of friction between the wall and block is 0.6. The magnitude of the force exerted by the wall on the block is
Due to normal reaction a force of 12N acts towards left.
and also as block is at rest frictional force must balance the weight. therefore frictional force is 5N in upward direction.
hence the two forces are perpendicular
so resultant = √(12*12 + 5*5 ) = 13N
When a force F acts on a body of a mass m, the acceleration produced in the body is a. If three equal forces F1 = F2 = F3 = F act on the same body as shown in figure. The acceleration produced is
A force vector applied on a mass is represented by and accelerates with a What is the mass of the body
A monkey of mass 20 kg is holding a vertical rope.The rope will not break when a mass of 25 kg is suspended from it but will break if the mass exceeds 25 kg. What is the maximum acceleration with which the monkey can climb up along the rope ?(g=10