User Forum

Subject :NSO    Class : Class 8

Read the given passage and answer the following questions. A cuboid rests on the floor. Data of the cuboid and some other parameters are given here.

By rotating the cuboid, what is the minimum pressure it can exert on the floor?

A7500 Pa
B10000 Pa
C5000 Pa
D20000 Pa


Ans 1:

Class : Class 9
C is the answer

Ans 2:

Class : Class 8
Minimum pressure means maximum area as pressure is inversely proportional to area so, 1 cm = 1/100 m so the Largest area is 40cm*30cm = 4/10* 3/10 = 12/100 P =F/Area P = Mass*acceleration/area P = 60*10/(12/100) P = 600 * 100/12 P = 60000/12 = 5000 so answer is C

Post Your Answer