Answer:
Explanation:
Let four particles are placed on X axis symmetrically about the origin and M is placed on y axis.
According to the diagram, the x component of forces balances each other and the net force acting on the particle of mass m is acting in the direction of negative Y axis.
Speed can be shown on a graph of position versus time, and acceleration can be shown on a graph of speed versus time.
Answer:
Explanation:
Distance to Andromeda galaxy
Speed of light is
Time is given by
Hence, the light from Andromeda left ago
Answer:
(a) Velocity will be 17.146 m/sec
(b) Volume flow rate will be
Explanation:
We have given height of the dam h = 15 m
Acceleration due to gravity
Effective area
(a) From conservation of energy
Potential energy at the top will be equal to kinetic energy at the bottom
So
(b) We have to find the volume flow rate
Volume flow rate is given by
Answer:
Explanation:
a ) maximum friction possible
= .3 x 30 x 9.8
= 88.2 N
It is friction force which creates acceleration in 30 kg packing case.
Friction force F
F = ma
= 30 x 2.51
= 75.3 N
It will be in north direction , the direction of acceleration.
b ) F = ma
= 30 x 3.63
= 108.9 N
But maximum friction force is 75.3 N , so load will start slipping northward. so friction force will be acting southward.
Friction force = .2 x 30 x 9.8 ( coefficient of kinetic friction applies )
= 58.8 N
towards south .