Advertisements
Advertisements
Question
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
Solution
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
RELATED QUESTIONS
What do you mean by free fall?
A stone is allowed to fall from the top of a tower 100 m high and at the same time another stone is projected vertically upwards from the ground with a velocity of 25 m/s. Calculate when and where the two stones will meet.
What is the acceleration produced in a freely falling body of mass 10 kg ? (Neglect air resistance)
During a free fall, will heavier objects accelerate more than lighter ones ?
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.
A force of 15 N acts on a body of mass 2 kg. Calculate the acceleration produced.
A body falls freely under gravity from rest and reaches the ground in time t. Write the expression for the height fallen by the body.
What is the acceleration due to gravity?
The mass of planet ‘X” is four times that of the earth and its radius is double the radius of the earth. The escape velocity of a body from the earth is 11.2 × 103 m/s. Find the escape velocity of a body from the planet 'X’.
Write a short note.
Free Fall
