撑杆跳高时，使撑杆变弯的力的施力物体是
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撑杆跳高时，人给撑杆一个力，所以使撑杆变弯的力的施力物体是人；
用手拉弹簧时，弹簧发生了弹性形变，弹簧由于要恢复原状就会对跟它接触的物体产生一个力的作用，这个力就是弹力．
故答案为：人；弹性形变．
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