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cie mechanics 1 help please!

okay so this is the problem:

A child has weight 450 N. Whilst on a fairground ride the child is subject to a force P acting at 35° to the upward vertical, as shown in the diagram. Given that the resultant of P and the child’s weight acts horizontally,
a. Find the magnitude of the resultant
b. State the direction of the child’s acceleration
c. Find the magnitude of the child’s acceleration

The answers are the following
a. 315 N (to 3 s.f.)
b. The child’s acceleration is directed horizontally to the left
c. 6.86 m/s^2

i've tried this problem so many times but i still dont get it.

so this is what i did (attached)

helpppp pleaseee!

ImageUploadedByStudent Room1350142676.282397.jpg


This was posted from The Student Room's iPhone/iPad App
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Avatar for justinawe
justinawe
19
Original post by apisara
okay so this is the problem:

A child has weight 450 N. Whilst on a fairground ride the child is subject to a force P acting at 35° to the upward vertical, as shown in the diagram. Given that the resultant of P and the child’s weight acts horizontally,
a. Find the magnitude of the resultant
b. State the direction of the child’s acceleration
c. Find the magnitude of the child’s acceleration

The answers are the following
a. 315 N (to 3 s.f.)
b. The child’s acceleration is directed horizontally to the left
c. 6.86 m/s^2

i've tried this problem so many times but i still dont get it.

so this is what i did (attached)

helpppp pleaseee!

ImageUploadedByStudent Room1350142676.282397.jpg


This was posted from The Student Room's iPhone/iPad App


See the poorly drawn MS paint vector diagram attached.

You should be able to get the correct answers using that diagram.

force.bmp

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