Three space probes, Probe $A$, Probe $B$, and Probe $C$ with mass $600$ kg, $630$ kg, and ${900}$ kg

Question

Three space probes, Probe $A$, Probe $B$, and Probe $C$ with mass $600$ kg, $630$ kg, and ${900}$ kg respectively were sent into space to find the gravitational pull on the planets Venus, Mars, and Saturn. The sum of the weights of Probe $B$ on the three planets is $13860$ N. The weight of Probe $C$ on Saturn is $2880$ N more than the weight of Probe ${A}$ on Venus. The average weight of Probe $A$ on Saturn, Probe $B$ on Venus, and Probe $C$ on Mars is $4870$ N. Find the gravitational pull on each of the planets. [3] Hence find the weight of Probe $D$, which has mass $500$ kg, on planet Saturn. [Weight (in N)$=$Mass (in kg)$	imes $gravitational pull (ms$^{-2}$)] [1]

Accepted Answer

Gravitational pulls: Venus $9\,\mathrm{m\,s^{-2}}$, Mars $3.8\,\mathrm{m\,s^{-2}}$, Saturn $9.2\,\mathrm{m\,s^{-2}}$; weight on Saturn $4600\,\mathrm N$

2010 IJC P2 Q1

2010 IJC P2 Q1

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