Advertisements
Advertisements
प्रश्न
Figure shows the velocity-time graph of a particle of mass 100 g moving in a straight line. Calculate the force acting on the particle.
(Hint : Acceleration = Slope of the v-t graph)
Advertisements
उत्तर
Given mass, m = 100 g = 0.1 kg.
Slope of a velocity-time graph gives the value of acceleration.
Acceleration = Slope = `20/5` = 4 m/s2.
Force = Mass × Acceleration.
Force = 0.1 × 4 = 0.4 N.
APPEARS IN
संबंधित प्रश्न
A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground.
State whether the following statement is true or false :
A falling stone also attracts the earth.
During a free fall, will heavier objects accelerate more than lighter ones ?
Name the force which pulled the apple off Isaac Newton’s tree.
A ball falls off a table and reaches the ground in 1 s. Assuming g=10 m/s2, calculate its speed on reaching the ground and the height of the table.
Choose one or more correct alternatives.
Which of the forces involved in dragging a heavy object on a smooth, horizontal surface, have the same magnitude?
- The horizontal applied force
- gravitational force
- reaction force in vertical direction
- force of friction
The acceleration produced in a body by a force of given magnitude depends on
An object falling freely from rest reaches ground in 2 s. If acceleration due to gravity is 9.8 m s-2, then the velocity of object on reaching the ground will be
Define acceleration due to gravity.
When is free fall possible?
