A girl weighing $25\ kg$ stands on the floor. She exerts a downward force of $250\ N$ on the floor. What force does the floor exert on her ?

Academic Physics NCERT Class 9

Here, the girl exerts a force of $250\ N$ on the floor. According to Newton's third law of motion, reaction force exerted by the floor on her will be equal to $-250\ N$. Here $(-ve)$ sign indicates the opposite direction.

Tutorialspoint

Simply Easy Learning

Updated on: 10-Oct-2022

64 Views

Related Articles
Alida runs her toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be$(a)$. wet marble floor, dry marble floor, newspaper and towel.$(b)$. newspaper, towel, dry marble floor, wet marble floor.$(c)$. towel, newspaper, dry marble floor, wet marble floor.$(d)$. wet marble floor, dry marble floor, towel, newspaper
A boy runs his toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be:(a) Wet marble floor, Dry marble floor, Newspaper, Towel(b) Newspaper, Towel, Dry marble floor, Wet marble floor(c) Towel, Newspaper, Dry marble floor, Wet marble floor(d) Wet marble floor, Dry marble floor, Towel, Newspaper
Which force can be used to gather iron pins scattered on the floor?
Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown in Fig. Calculate the acceleration and frictional force of the floor on the ball."
A boy of mass $50\ kg$ standing on ground exerts a force of $500\ N$ on the ground. What will be the force exerted by the ground on the boy?
A students caries a bag weighing 5 kg from the ground floor to his class on the first floor that is 2 m high. Calculate the work done by the boy.
Why does the water spilled on the floor disappear after some time?
A boy of mass 50 kg standing on ground exerts a force of 500 N on the ground. The force exerted by the ground on the boy will be:(a) 50 N(b) 25000 N(c) 10 N(d) 500 N
Using a horizontal force of 200 N, we intend to move a wooden cabinet across a floor at a constant velocity. What is the friction force that will be exerted on the cabinet?
Why does one get hurt on jumping from a great height to the floor?
How would you measure the speed of a ball rolling on a floor ?
You spill a bucket of soapy water on a marble floor accidently. Would it make easier or more difficult for you to walk on the floor? Why?
An elephant weighing $40,000\ N$ stands on one foot of area $1000\ cm^2$ whereas a girl weighing $400\ N$ is standing on one ‘stiletto’ heel of area $1\ cm^2$.(a) Which of the two, elephant or girl, exerts a larger force on the ground and by how much?(b) What pressure is exerted on the ground by the elephant standing on one foot?(c) What pressure is exerted on the ground by the girl standing on one heel?(d) Which of the two exerts larger pressure on the ground: elephant or girl?(e) What is the ratio of pressure exerted by the girl to the pressure exerted by the elephant?
You spill a bucket of soapy water on a marble floor accidentally. Would it make it easier or more difficult for you to walk on the floor? Why?
A floor is \( 5 \mathrm{~m} \) long and \( 4 \mathrm{~m} \) wide. A square carpet of sides \( 3 \mathrm{~m} \) is laid on the floor. Find the area of the floor that is not carpeted.

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements