Question

find t and a with 10kg 10 kg and 30°​

Answer 1

Answer:

Two blocks of masses 10 kg and 30 kg are placed along a vertical line. If the first block is raised through a height of 7 cm by what distance should the second mass be moved to raise the center of mass by 1 cm down.

Two masses m

1

and m

2

are kept in verticle line

m

1

=10kg m

2

=30kg

y

1

=7cm y

2

=?

The centre of mass raised by 1cm

centre of mass =

m

1

+m

2

m

1

y

1

+m

2

y

2

1 =

10+30

10×7+30×y

240=70+30y

2

y

2

=−1

So, m2

=30kg body should be displaced 1cm downward ,so as to raise the centre of mass through 1cm

so the correct answer is (B)