Calculating Frictional Force Using Spring Balance

Q.

What is a spring balance ?

Q.

Does spring balance measure weight or mass?

Q.

Name the instrument used to measure weight?

Q. Which of the following devices is used to measure weight?

1. Tachometer
2. Speedometer
3. Odometer
4. Spring balance

Q.

A physical balance is used for the measurement of __________

1. length

2. volume

3. area

4. mass

Q. Describe an activity to find the limiting force that can be beared by a string.

Q. When a body is moving on a surface, the force of friction is called

1. Kinetic friction
2. Static friction
3. Limiting friction
4. Rolling friction

Q. Sanjana performed an experiment to find the amount of force needed to move a 1 kg block over four different surfaces - wood, sandpaper, concrete and glass. Which of these will show minimum reading?

1. Wood
2. Sandpaper
3. Concrete
4. Glass

Q. Sanjana performed an experiment to find the amount of force needed to move a 1 kg block over four different surfaces - wood, sandpaper, concrete and glass. Which of these will show minimum reading?

1. Glass
2. Sandpaper
3. Concrete
4. Wood