Hi there!
Question 1:
We know that Impulse = Δp = mΔv, so:
I = 0.045(70) = 3.15 Ns
I = F · t, so:
3.15/0.1 = F
F = 31.5 N
Question 2.
We can find the impulse using:
I = Ft
I = 300 · 0.04 = 12 Ns
Find the change in velocity using:
I = mΔv
12/0.13 = Δv = 92.31 m/s
Answer:
Resultant force = 17.02 N
Explanation:
As we assume the coefficient of friction is negligible, the normal force won't affect the resultant force.
As a result of this, the sine of the angle times the force of gravity on the 10 kg mass is equal to the resultant force, which is, force due to gravity = m × a = 10 kg × 9.8 m/s² = 98 N
98 sin(10)=?
Sin(10)= 0.1736
98 x 0.1736= 17.02 N.
Therefore, the resultant force = 17.02 N
I think through convection I forget. Plus its enclosed (and, well closed)
Answer:
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