Question

when the trapdoor is closed the ledge exerts an upward force of 15N on trapdoor the gravitional fielld strength is 10N/kg what is mass​

Answer 1

Answer:

1.5 kg

Explanation:

you see here upward force of 15 N is acting in place of normal reaction thus balancing it out

15N =10N/kg × x

(x = mass)

x = 15/10 =1.5

Answer 2

Answer:

we know that gravitational force and mass = force

(kg * Nkg ^-1 = N).

So to find the mass = N / Nkg^-1 = mass (f / gf = m)

15N / 10N/kg = 1.5kg

Answer = 1.5kg

Hope it helps !!