Answer

Verified

403.2k+ views

**Hint:-**We have been given two known variables: torque (0.5N) and force (50N) and an unknown variable: width of the driver. Apply the general formula for torque, here the radius is the width of the screw driver because the torque is acting along the width of the screw driver.

Formula Used: The formula for torque is given by:

$\tau = r \times F$;

Where:

$\tau = Torque$;

$r = {\text{ Radius / width of the screw driver}}$;

$F = Force$;

**Complete step-by-step solution**

Here apply the formula of torque and solve the unknown value that is the width of the screw driver:

$\tau = r \times F$;

Put the given value in the above equation;

$0.5 \times 100Ncm = r \times 50N$;

Keep the radius “r” on the RHS and take the other quantity to LHS,

$\dfrac{{0.5 \times 100}}{{50N}} = r$;

The value of r which is the width of the screw driver is:

$r = 1cm$;

Final Answer: Option “3” is correct. The width of the screw driver is 1cm.

**Note:-**

Torque is defined as the angular force required to rotate the object. Just like we have studied about the force F, the torque is just angular equivalent of the linear force. The formula$\tau = r \times F$ gives the relation between linear and angular force. The scalar version of the formula is $\tau = rF\sin \theta $. Where the angle plays an important role in determining the torque.

Recently Updated Pages

Which of the following materials is likely to have class 8 physics CBSE

What is a quasar What is their importance class 8 physics CBSE

Identify the parts which vibrate to produce sound in class 8 physics CBSE

Write the relation between liter and cm3 class 8 physics CBSE

Define the terms a ray of light and a beam of ligh class 8 physics CBSE

Suppose you are in a car and it is raining heavily class 8 physics CBSE

Trending doubts

Difference Between Plant Cell and Animal Cell

Give 10 examples for herbs , shrubs , climbers , creepers

Fill the blanks with the suitable prepositions 1 The class 9 english CBSE

Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE

Write a letter to the principal requesting him to grant class 10 english CBSE

Change the following sentences into negative and interrogative class 10 english CBSE

Write the 6 fundamental rights of India and explain in detail

Name 10 Living and Non living things class 9 biology CBSE

The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths