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nap Homework httpsllwww.webassign.net/webstudent/Assignment Responses submit?pos 48deps15814258 e search 6. O -110 points oscophys2016 45wA029 Tuorial A contestant in a ter games event pushes a 36.0 kg rock across a frozen lake with a force of 2s N at 20 below the horizontal as shown in Figure (u)below, andR moves with ao acceleration of 0.61 m/s2 to the right. a) What is the normal force exerted by the lake surface on the rock? (b) Instead of pushing on the rock, the contestant on with a rope shoulder at the same angle above lionuontal anpar ser the over Now what is the normal force exerted the surface on the rock? by Additional Materials Tutorial O Ask me anythi

Explanation / Answer

a) N (Normal Force) = mg + F sin 25 ---------eq(1)

ma = F cos 25--eq(2)

36 (0.61) = F (0.906)

F (applied force) = 24.238 N apprx

N = 36 (9.8) +24.238 ( 0.422) = 363.04 N apprx

b) N = mg - F sin 25= 36 (9.8 ) - 24.238 ( 0.422) = 342. 572 N apprx

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