Question

Find the area of a plyboard sheet needed to make a cuboidal box 1.5m long, 1 m
broad and 1.2 m high. PLEASE ANSWER FAST VERY URGENT PLEAS VERY VERY URGENT

Answer 1

Step-by-step explanation:

Question

A box of weight 100 N is lifted to a height of 10 m above ground. How much potential energy will be stored in the box?

Given

Force= 100 N

height= 10 m

gravity= 10 m/sec²

To Find

calculate the potential energy

Formula used

: \to \: f = m.a:→f=m.a

: \to \: p.e = m \times g \times h:→p.e=m×g×h

Solution

❐According to second law of motion:

\boxed{f = m.a}

f=m.a

put the value in the above formula to get the mass

➯100 = mass x 10

➯mass = 100/10

➯mass = 10 kg

❐ Potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.

\boxed{ p.e = m \times g \times h}

p.e=m×g×h

where

p.e= potential energy

m= mass

g= gravity

h= height

put the value in the above formula

➯potential energy= 10 x 10 x 10

➯ potential energy= 1000 Joule

therefore potential energy is 1000 J....