Please show steps... (a) In outer space, far from other objects, block 1 of mass
ID: 1418341 • Letter: P
Question
Please show steps...
(a) In outer space, far from other objects, block 1 of mass 70 kg is at position < 9, 13, 0 > m, and block 2 of mass 1100 kg is at position < 15, 13, 0 > m. What is the (vector) gravitational force acting on block 2 due to block 1? It helps to make a sketch of the situation. VECTOR form please.
I got <1.433e-7,0,0> but it is wrong.. :(
(b) At 4.5 seconds after noon both blocks were at rest at the positions given above. At 4.7 seconds after noon, what is the (vector) momentum of block 2?
Explanation / Answer
r= (x2-x1)
=( 15-9)
=6 m
F = G m1m2/r^2 = 6.67 * 10^-11 ( 70)(1100)/( 6 m)^2
=<-1.42 * 10^-7, , 0,0> N
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(b)
change in momentum = F delt
the (vector) momentum of block 2 is
del P =( -1.42 * 10^-7 N)( 4.7-4.5) = -2.84* 10^-8 kg m/s
del P <-2.84 *10^-8,0,0> kg m/s