Question

4. Calculate pressure exerted by a screw on the wooden plank if area of contact of
the screw is 0.5 mm and its weight is 50 N
(1) 100 * 10 N/m
(2) 50 x 106 N/m
(3) 100 * 106
(4) 50 106 N
cm.​

Answer 1

Answer:

1.100*10 N/m it must be correct

Answer 2

Answer:

The pressure exerted by a screw on the wooden plank is 10⁸ Pascal.

Explanation:

Given

Surface Area of screw(A)=0.5mm²=0.5/10⁶m²

Weight/Force of screw(F)=50N

Pressure exerted by a screw(P)=?

To find pressure exerted by a screw on the wooden plank

Solution:

Pressure is given by,

$Pressure(P)=Force(F)/Area(A)$

=50/0.5ₓ10⁻6

=100ₓ10⁶

=10⁸N

Hence, the pressure exerted by a screw on the wooden plank is 10⁸ Pascal.